diff --git a/README.md b/README.md
index 2608430..000bb55 100644
--- a/README.md
+++ b/README.md
@@ -1,22 +1,24 @@
 
-pcap
-----
+Modules
+=======
+
+pcap (sim)
+----------
 Utility to replay a packets from Wireshark/tcpdump pcap file over a single-byte bus
 for use in network handling test benches.  
 http://wiki.wireshark.org/Development/LibpcapFileFormat
 
-littletoe
----------
+littletoe (synth)
+-----------------
 Basic read-only MAC/IP/TCP stack to follow a specific TCP session at the data level, from wire-format packets.
 
-bcd
----
+bcd (synth)
+-----------
 Convertors to and from binary to numerical ascii/bcd
 
-xml
----
-A scanner/parser to help parse XML documents. Track tag nesting stack, tag key/value/data, comments and outputs control signals synchronised with datastream. Uses an internal 4-byte look-ahead.
-
+xml (synth)
+-----------
+A scanner/parser to parse XML documents. Tracks tag nesting stack (8 deep), tag key/value/data, comments/data/tag stream. Outpus control signals synchronised with delayed datastream. Uses an internal 4-byte look-ahead for processing, which can be flushed with EOM input.
 
 hash
 ----
@@ -28,8 +30,8 @@ altera
 Code from the Altera cookbook modified to simulate in Icarus.  
 http://www.altera.com/literature/manual/stx_cookbook.pdf
 
-testbench
----------
+Testbenches
+===========
 Test benches can be rebuilt with `make` assuming you have `ivp` and `iverilog` on your path.  
 Simulation waveforms are written to lxt2 format and are opened with `gtkwave` when a bench/implementation is rebuilt.  
 Save files for gtkwave (`gtksav/*.sav`) are included to setup zoom and signals.